/**
 * Copyright (C) 2011 Moss Computing <support@mosscomputing.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.oslef.csv.table;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

public final class HeaderInfo implements Iterable<String> {
	
	private final List<String> columns;
	
	public HeaderInfo(String[] columns) {
		List<String> l = new ArrayList<String>();
		l.addAll(Arrays.asList(columns));
		this.columns = Collections.unmodifiableList(l);
	}
	
	public String valueAt(String columnName, String[] data) {
		int index = columns.indexOf(columnName);
		return data[index]; 
	}
	
	@Override
	public String toString() {
		return columns.toString();
	}
	
	public List<String> columns() {
		return columns;
	}

	public Iterator<String> iterator() {
		return columns.iterator();
	}
}